Elastomeric, ready-to-use, single-component, neutral-cure silicone sealant that cures upon exposure to atmospheric humidity to form a flexible firestop seal that also acts as a barrier to airborne sound transmission.
Seals construction joints and through penetrations in fire-rated assemblies. Provides up to 4-hour fire protection. Light grey colour, ^+ 13% movement capability in joint systems. When properly installed, product provides up to 4-hour protection against the spread of fire, smoke and noxious gas in tested and listed systems. In addition, this product acts as an acoustic barrier by minimising noise transfer (STC-Rating of 56 when tested in a STC 56-rated wall assembly), helps create a smoke seal for installations requiring the optional L-Rating, meets the intent of LEED® VOC environmental regulations.

• Testing in accordance with AS1530.4, AS4072.1, and ASTM E814 (UL Listed).
• Fire Resistance tested up to 4 hours for construction joint systems in accordance with ASTM E 1966 (UL 2079)
• Compatible for use with CPVC piping
• Compression/extension capability of ± 13%
• Applied with conventional caulking equipment (excellent caulk rate)
• Excellent weatherability during construction
• Excellent adhesion
• Re-enterable/repairable

Specifications
Brand: 3M™
Fire Rating: 4 Hour
Movement Capability: 13%
Product Type: Sealant
Smoke Seal: Yes
Sound Barrier: 56 in 56
Volume (metric): 591 Millilitre
Water Tight: No